Предмет: Физика, автор: marinaoctoberr

Два источника тока с ЭДС Е1 = 8 В, Е2 = 6 В и внутренними сопротивлениями r1 = 2 Ом и r2 = 1,5 Ом и реостат с сопротивлением R = 10 Ом соединены так:паралельное соединение источников тока и реостата таким образом,что последний находится между ними.вычислить силу тока, текущего через реостат.

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Ответы

Автор ответа: ElleckTrick

I=I1+I2;
E1=I*R+I1*r1;
E2=I*R+I2*r2;
I=(E1*r2+E2*r1)/(R*r1+r1*r2+R*r2);
I=(8*1.5+6*2)/(10*2+2*1.5+10*1/5)=0.632

Автор ответа: marinaoctoberr

подробнее можно?что и откуда взялось?

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